90515814 has 8 divisors (see below), whose sum is σ = 181031640. Its totient is φ = 30171936.

The previous prime is 90515813. The next prime is 90515819. The reversal of 90515814 is 41851509.

It is a sphenic number, since it is the product of 3 distinct primes.

90515814 is an admirable number.

It is a super-2 number, since 2×90515814² = 16386225168165192, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90515813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7542979 + ... + 7542990.

It is an arithmetic number, because the mean of its divisors is an integer number (22628955).

Almost surely, 2^90515814 is an apocalyptic number.

90515814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90515814 is a wasteful number, since it uses less digits than its factorization.

90515814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15085974.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 90515814 is about 9513.9799243009. The cubic root of 90515814 is about 448.9949817810.

The spelling of 90515814 in words is "ninety million, five hundred fifteen thousand, eight hundred fourteen".